1. From the Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Kyoto, Japan;
2. the Department of Ophthalmology, University of Tokyo, Graduate School of Medicine, Tokyo, Japan;
3. the Department of Ophthalmology, Gunma University School of Medicine, Maebashi, Japan;
4. the Department of Ophthalmology, Osaka University Medical School, Suita, Japan;
5. the Division of Ophthalmology and Visual Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan;
6. the Department of Ophthalmology, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan; and
7. the Department of Ophthalmology, Tajimi Municipal Hospital, Tajimi, Japan.